KONOVALOV, V. N. Approximation of Sobolev Classes by Their Sections of Finite Dimension. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 54, n. 5, p. 647–655, 2002. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/4103. Acesso em: 14 apr. 2025.